What is the polar shift theory? Is it true that the earth's crust does a 180-degree rotation around the core in several days if not hours?

极地转移理论是什么？地球的外壳将会在几天如果不是几小时之内的话围绕地心旋转180度的说法是真的吗？

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The essence of polar conversion is that organic compound reflects the carbon atom electricity in the centre and changes, kiss the electricity or kiss the core course changing.

极性转换的本质是有机化合物反应中心碳原子电性发生转换，即亲电性或亲核性发生转换的过程。

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Quantify the Relevance Hydrophobicity in protein Structure: the general expectation is that hydrophobic aminoacids are in the core of proteins, while polar aminoacids are on the surface.

量化蛋白质结构的参比疏水性：一般认为，疏水性氨基酸在蛋白质的核中，而极性氨基酸在表面。

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For example, scientists can tell by the way ice crystallizes what the weather and temperature was like thousands of years ago in ice core samples from polar regions.

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In the polar regions, even the smallest of holes in your warm clothing can have major implications on your core temperature and survival.

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